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针对IEC 60335-1的家电类产品来说:4 ^% `2 H. j* B( O3 @" F& u
Y1或Y2都可以。如果使用则至少需要2个或以上,需要考虑任何一个开路或短路的情况。
" `9 r7 P7 y6 q0 T6 c1 ]/ S: B
8 K% U0 ~- S5 c* g+ k; |22.42 Protective impedance shall consist of at least two separate components. If any one3 r( J# P2 B- ^5 g3 C0 F1 G
of the components is short-circuited or open-circuited, the values specified in 8.1.4 shall not
3 q8 C, M D# C$ ^% pbe exceeded.) k7 K/ W+ T. o: e6 {4 o" u+ S
Component impedances shall be unlikely to change significantly during the lifetime of the
/ R# v* B$ j6 V \4 o( Dappliance.+ y7 C' S3 _$ m$ ]# m6 u) K( {
Compliance is checked by inspection and by measurement and if necessary, for resistors and- K, \1 K$ H# Y: l
capacitors by the following tests.
# u: B( [( c) N- R: u; LResistors are checked by the test of 14.1 a) in IEC 60065 and capacitors are checked by the
' R1 \" a. h5 d! ttests for class Y capacitors in IEC 60384-14 appropriate to the rated voltage of the appliance. |
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